Reply to "Maui garage find Intermeccanica rebuild"

As an alternative method to think about, If you make sure that both the head mating area and the corresponding flange on the bottom of the intake manifold are really flat (that sanding on glass trick mentioned above) and it still sucks the center of the gasket out over time, you could delete the gasket and use Locktite 510 flange sealant in place of the gasket between the parts (as recommended to me by Jake Raby).  Harder, but not impossible, to get them apart in the future, but they shouldn't leak.

Looking at your photo of the head, though, you've got about twice as much meat between ports as I do, so the gasket will probably be fine for you.

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